Brown sausage links in a non-stick skillet.
Add 1/2 cup water to the skillet and continue to cook sausage over medium heat for 5-7 more minutes.
Remove sausage from skillet and slice into rounds. It's okay if it's not cooked all the way through. It will finish cooking in the slow cooker.
Add peppers, onion, and garlic to skillet. Cook till tender-crisp.
Put sausage, veggies and remaining ingredients into slow cooker.
Cook on high 4-5 hours or low 7-8 hours.
Serve over hot, cooked pasta.